A plastic packaging bag printing device

Abstract

This utility model discloses a printing device for plastic packaging bags, including a workbench. A printing component is installed at one end of the top surface of the workbench. Support plates are fixedly connected to both sides of the top surface of the workbench, and a horizontal plate is fixedly connected between the top ends of the two support plates. A horizontally arranged air guide cylinder is fixedly connected between the inner walls of the two support plates. Several first air nozzles are installed at the bottom of the air guide cylinder, spaced apart along the length of the air guide cylinder and facing vertically downwards. Several second air nozzles are installed on both sides of the first air nozzles, and the angle between the second air nozzles and the first air nozzles is an acute angle. A blower is fixedly connected to the top surface of the horizontal plate and is connected to the air guide cylinder through a pipe. A heating component is installed between the two support plates to heat the air inside the air guide cylinder. This utility model can accelerate the drying speed of the pigment, ensure that all parts of the plastic packaging bag are dried evenly, and improve the printing efficiency and effect of the device.

Description

Technical Field

[0001] This utility model relates to the field of plastic packaging bag production technology, and in particular to a plastic packaging bag printing device. Background Technology

[0002] Plastic packaging bags are thin-film containers made from high-molecular polymers such as polyethylene and polypropylene. They are mainly used to protect and store goods and isolate them from external influences such as moisture and pollution. With their advantages of being lightweight and low-cost, they are widely used in food, daily necessities, and industrial products, and are a common form of modern packaging. During the production process of plastic packaging bags, printing is required to enhance product recognition and visual appeal; therefore, plastic packaging bag printing equipment is necessary.

[0003] Existing plastic packaging bag printing equipment usually includes a drying mechanism to speed up the drying of pigments on the plastic packaging bags. For example, the utility model patent with authorization announcement number CN219236501U discloses a plastic packaging bag printing device that uses a servo motor, a reciprocating threaded rod, a threaded sleeve, a second support frame, a blower, a second duct, and a nozzle to work together to repeatedly spray air onto the surface of the freshly processed plastic packaging bag.

[0004] While the aforementioned plastic packaging bag printing device can accelerate pigment drying, the plastic packaging bag moves unidirectionally via a motor-driven roller, while the printhead reciprocates via a servo motor and threaded rod. Therefore, when the printhead moves in the opposite direction to the plastic packaging bag, the relative speed increases, resulting in a shorter air jet time in that area; conversely, when the printhead moves in the same direction, the relative speed decreases, resulting in a longer air jet time in that area. Consequently, the pigment cannot be dried evenly across all areas of the plastic packaging bag, thus affecting the drying efficiency and overall effect.

[0005] Therefore, it is necessary to develop a plastic packaging bag printing device to address the aforementioned shortcomings. Utility Model Content

[0006] The purpose of this invention is to provide a plastic packaging bag printing device that can accelerate the drying speed of pigments, ensure that all parts of the plastic packaging bag are dried evenly, and improve the printing efficiency and effect of the device.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This utility model discloses a plastic packaging bag printing device, comprising a workbench, characterized in that: a printing component is provided at one end of the top surface of the workbench; support plates are fixedly connected to both sides of the top surface of the workbench; a horizontal plate is fixedly connected between the top ends of the two support plates; a horizontally arranged air guide cylinder is fixedly connected between the inner walls of the two support plates facing each other; a plurality of first air nozzles are provided at the bottom end of the air guide cylinder, the first air nozzles are spaced apart along the length of the air guide cylinder and face vertically downward; a plurality of second air nozzles are provided on both sides of the first air nozzles, the angle between the orientation of the second air nozzles and the first air nozzles is an acute angle; a blower is fixedly connected to the top surface of the horizontal plate, the blower is connected to the air guide cylinder through a pipe; a heating component is provided between the two support plates, the heating component being used to heat the air inside the air guide cylinder.

[0008] Furthermore, the bottom cross-section of the air guide tube is trapezoidal, the first jet head is fixedly connected to the bottom surface of the air guide tube, and the second jet head is fixedly connected to the two inclined surfaces at the bottom of the air guide tube.

[0009] Furthermore, the heating assembly includes a mounting plate with an arc-shaped bottom surface and a plurality of heating wires fixed at intervals along its length on the arc surface of the mounting plate; the top cross-section of the air guide cylinder is arc-shaped, and the arc surface of the top of the air guide cylinder fits against the arc surface of the mounting plate.

[0010] Furthermore, a horizontally arranged baffle is fixedly connected to the middle position of the inner cavity of the air guide cylinder, the baffle dividing the air guide cylinder into a heating chamber and an air outlet chamber; one end of the heating chamber is connected to the blower, and the baffle has a vent hole away from the air inlet end, the vent hole connecting the heating chamber and the air outlet chamber.

[0011] Furthermore, a set of connecting blocks is fixedly connected to both ends of the top surface of the workbench, and there are two sets of connecting blocks in each set. Rollers are rotatably connected between the connecting blocks in each set.

[0012] Furthermore, the angle between the orientation of the second jet head and the orientation of the first jet head is not less than 30° and not greater than 60°.

[0013] Compared with the prior art, the beneficial technical effects of this utility model are as follows: This invention utilizes a fixed air guide cylinder and first spray nozzles spaced along its length. Combined with the unidirectional movement of the packaging bag, this ensures that all positions on the bag receive air spray for a consistent time, resulting in more uniform drying. The addition of second spray nozzles extends the drying time of the packaging bag. Simultaneously, a heating component heats the air inside the air guide cylinder, creating hot air spray. Compared to existing room-temperature spraying, hot air accelerates the evaporation rate of moisture in the pigment. Furthermore, the multi-angle, comprehensive spraying method doubles the improvement in pigment drying efficiency and shortens the production cycle. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a cross-sectional view of the plastic packaging bag printing device of this utility model; Figure 2 This is a cross-sectional view of the heating assembly of this utility model; Figure 3 This is a cross-sectional view of the heating component of this utility model from another perspective.

[0016] Explanation of reference numerals in the attached drawings: 1. Workbench; 2. Support plate; 3. Horizontal plate; 4. Air guide tube; 5. First jet nozzle; 6. Second jet nozzle; 7. Blower; 8. Mounting plate; 9. Heating wire; 10. Baffle; 11. Heating chamber; 12. Air outlet chamber; 13. Vent hole; 14. Connecting block; 15. Roller. Detailed Implementation

[0017] The core of this utility model is to provide a plastic packaging bag printing device that can accelerate the drying speed of pigments, ensure that all parts of the plastic packaging bag are dried evenly, and improve the printing efficiency and effect of the device.

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] It is understood that all electrical components mentioned in this article are electrically connected to the main controller and power supply, and all electrical components mentioned in this article are conventional and known devices. This application will not elaborate further. The main controller can be a conventional and known device such as a computer that performs control. The control circuit of the main controller can be implemented by a person skilled in the art through simple programming. The power supply is also common knowledge in the art. Furthermore, this utility model is mainly used to protect mechanical devices. Therefore, this utility model will not explain the control method and circuit connection in detail. At the same time, all parts not described in detail in this utility model are common technologies known to those skilled in the art.

[0021] In one specific embodiment of this utility model, such as Figures 1-3 As shown, the device includes a workbench 1, with a printing assembly mounted on one end of its top surface. Support plates 2 are fixedly connected to both sides of the top surface of the workbench 1, and a horizontal plate 3 is fixedly connected between the top ends of the two support plates 2. A horizontally positioned air guide cylinder 4 is fixedly connected between the inner walls of the two support plates 2. Several first air nozzles 5 are positioned at the bottom of the air guide cylinder 4, spaced apart along its length and facing vertically downwards. Several second air nozzles 6 are positioned on both sides of each first air nozzle 5, with an acute angle between the second air nozzles 6 and the first air nozzles 5. A blower 7 is fixedly connected to the top surface of the horizontal plate 3, and the blower 7 is connected to the air guide cylinder 4 via a pipe. A heating assembly is positioned between the two support plates 2 to heat the air inside the air guide cylinder 4. It should be noted that the printing assembly specifically adopts the printing structure described in authorization announcement number CN219236501U, which includes a support frame, a cylinder, and a printing machine. This is existing technology and will not be described further here.

[0022] By setting the first jet head 5 and the second jet head 6, the drying time of the nonwoven bag can be increased. During the movement and conveying of the nonwoven bag, multiple air blowers can be applied to the same position from multiple directions. At the same time, in conjunction with the heating component, the air can be heated to heat the air in the air guide cylinder 4, forming hot air jets, which accelerates the evaporation rate of moisture in the pigment.

[0023] In one specific embodiment of this utility model, such as Figure 2 and Figure 3 As shown, the bottom cross-section of the air guide tube 4 is trapezoidal. The first jet head 5 is fixedly connected to the bottom surface of the air guide tube 4, and the second jet head 6 is fixedly connected to the two inclined surfaces at the bottom of the air guide tube 4.

[0024] In one specific embodiment of this utility model, such as Figure 2 and Figure 3As shown, the heating assembly includes a mounting plate 8 with an arc-shaped bottom surface. Several heating wires 9 are fixedly arranged along the length of the arc surface of the mounting plate 8 at intervals. The top cross-section of the air guide cylinder 4 is arc-shaped, and the arc surface of the top of the air guide cylinder 4 fits against the arc surface of the mounting plate 8. The heating wires 9 are made of nickel-chromium alloy wire and are fixed at intervals along the arc surface of the mounting plate 8. The radius of the arc surface at the top of the air guide cylinder 4 is the same as that at the bottom of the mounting plate 8. The arc-shaped fit design increases the contact area between the heating assembly and the air guide cylinder 4, allowing the heat generated by the heating wires 9 to be quickly transferred to the inner cavity of the air guide cylinder 4, heating the air.

[0025] Specifically, a horizontally positioned baffle 10 is fixedly connected to the middle of the inner cavity of the air guide cylinder 4, dividing the air guide cylinder 4 into a heating chamber 11 and an air outlet chamber 12. One end of the heating chamber 11 is connected to the blower 7, and a vent 13 is provided on the baffle 10 away from the air inlet end, connecting the heating chamber 11 and the air outlet chamber 12. The baffle 10 can prolong the residence time of air in the heating chamber 11, increasing the heating effect on the air.

[0026] In one specific embodiment of this utility model, such as Figure 1 As shown, a set of connecting blocks 14 is fixedly connected to both ends of the top surface of the workbench 1. There are two sets of connecting blocks 14 in each set, and rollers 15 are rotatably connected between each set of connecting blocks 14. Unprocessed plastic packaging bags are wound on the rollers 15 at the feeding end, and processed plastic packaging bags are wound on the rollers 15 at the discharging end. A motor is fixedly connected to the connecting block 14 at the discharging end to drive the rollers 15 to rotate, thereby pulling the plastic packaging bags to move. Pressing rollers are provided at both the feeding end and the discharging end to adhere the plastic packaging bags to the top surface of the workbench 1.

[0027] In one specific embodiment of this utility model, such as Figure 2 and Figure 3 As shown, the angle between the orientation of the second jet head 6 and the orientation of the first jet head 5 is not less than 30° and not greater than 60°.

[0028] The working principle of this utility model is as follows: When using the plastic packaging bag printing device, the operator winds the plastic packaging bag around the roller 15 at the feeding end, then passes it under the two pressing rollers and winds it around the roller 15 at the discharging end. Then, the motor installed on the outside of a set of connecting blocks 15 at the discharging end is turned on, thereby driving the roller 15 at the discharging end to rotate and achieve the winding of the plastic packaging bag. During this process, the printing component continuously prints on the plastic packaging bag. The heating component is started, and the heating wire 9 is energized and heats up, transferring the heat to the heating chamber 11 of the air guide cylinder 4. The blower 7 is started, and air enters the heating chamber 11 through the pipe. After being heated by the baffle 10, it enters the air outlet chamber through the vent 13 and is finally sprayed out from the first nozzle 5 and the second nozzle 6. The first nozzle sprays vertically downwards, and the second nozzle sprays obliquely to both sides, thus enabling multiple directional airflows to the same position of the printed packaging bag during its movement, increasing the drying time and effect of the packaging bag surface.

[0029] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0030] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A plastic packaging bag printing device, comprising a workbench (1), characterized in that: A printing assembly is provided at one end of the top surface of the workbench (1). Support plates (2) are fixedly connected to both sides of the top surface of the workbench (1). A horizontal plate (3) is fixedly connected between the top ends of the two support plates (2). A horizontally arranged air guide cylinder (4) is fixedly connected between the inner walls of the two support plates (2). Several first jet heads (5) are provided at the bottom of the air guide cylinder (4). The first jet heads (5) are spaced apart along the length of the air guide cylinder (4) and face vertically downward. Several second jet heads (6) are provided on both sides of the first jet heads (5). The angle between the second jet heads (6) and the first jet heads (5) is an acute angle. A blower (7) is fixedly connected to the top surface of the horizontal plate (3). The blower (7) is connected to the air guide cylinder (4) through a pipe. A heating assembly is provided between the two support plates (2). The heating assembly is used to heat the air in the air guide cylinder (4).

2. The plastic packaging bag printing device according to claim 1, characterized in that: The bottom cross section of the air guide tube (4) is trapezoidal. The first jet head (5) is fixedly connected to the bottom surface of the air guide tube (4), and the second jet head (6) is fixedly connected to the two inclined surfaces at the bottom of the air guide tube (4).

3. The plastic packaging bag printing device according to claim 1, characterized in that: The heating assembly includes a mounting plate (8), the bottom surface of which is an arc surface structure, and a number of heating wires (9) are fixed at intervals along its length on the arc surface of the mounting plate (8); the top section of the air guide cylinder (4) is an arc structure, and the top arc surface of the air guide cylinder (4) is in contact with the arc surface of the mounting plate (8).

4. The plastic packaging bag printing device according to claim 3, characterized in that: A horizontally arranged baffle (10) is fixedly connected to the middle of the inner cavity of the air guide cylinder (4). The baffle (10) divides the air guide cylinder (4) into a heating chamber (11) and an air outlet chamber (12). One end of the heating chamber (11) is connected to the blower (7). The baffle (10) has a vent hole (13) away from the air inlet end. The vent hole (13) connects the heating chamber (11) and the air outlet chamber (12).

5. The plastic packaging bag printing device according to claim 1, characterized in that: The workbench (1) has a set of connecting blocks (14) fixedly connected to both ends of its top surface. There are two sets of connecting blocks (14) in each set, and rollers (15) are rotatably connected between each set of connecting blocks (14).

6. The plastic packaging bag printing device according to claim 1, characterized in that: The angle between the orientation of the second jet head (6) and the orientation of the first jet head (5) is not less than 30° and not greater than 60°.

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